# schemas/cls_mgmt_schema.py
# 班级管理模块的 Pydantic 模式

from datetime import date
from typing import Optional

from pydantic import BaseModel, ConfigDict, Field


class ClsMgmtBase(BaseModel):
    """班级公共字段"""
    cls_start_date: date = Field(..., description="开课时间")
    head_tea_id: str = Field(..., max_length=15, description="班主任id")
    lecturer_id: str = Field(..., max_length=15, description="主讲老师id")


class ClsMgmtCreate(ClsMgmtBase):
    """新增班级时，id（班级编号）必填"""
    id: str = Field(..., max_length=15, description="班级编号(主键)")


class ClsMgmtUpdate(BaseModel):
    """更新班级信息：仅更新传入的字段"""
    cls_start_date: Optional[date] = Field(default=None, description="开课时间")
    head_tea_id: Optional[str] = Field(default=None, max_length=15, description="班主任id")
    lecturer_id: Optional[str] = Field(default=None, max_length=15, description="主讲老师id")


class ClsMgmtOut(ClsMgmtBase):
    """班级响应模型（含 id 与软删除标记）"""
    id: str
    is_deleted: int

    model_config = ConfigDict(from_attributes=True)